Home / 138,814.44-208,221.59-45,320.19

Finding the Fourth Proportional to 138,814.44, 208,221.59 and 45,320.19

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Solution

The fourth proportional to 138,814.44, 208,221.59 and 45,320.19 is: 67,980.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,814.44 : 208,221.59 = 45,320.19 : x
  2. Step 2: Convert to fraction form
    138,814.44/208,221.59 = 45,320.19/x
  3. Step 3: Cross multiply
    138,814.44x = 208,221.59 × 45,320.19
  4. Step 4: Simplify right side
    138,814.44x = 9,436,641,794.30
  5. Step 5: Solve for x
    x = 9,436,641,794.30/138,814.44
  6. Step 6: Final answer
    x = 67,980.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.